CVE-2021-20322
Summary
| CVE | CVE-2021-20322 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2022-02-18 18:15:00 UTC |
| Updated | 2023-11-09 14:44:00 UTC |
| Description | A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well. |
Risk And Classification
Problem Types: CWE-330
NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| [SECURITY] [DLA 2941-1] linux-4.19 security update | MLIST | lists.debian.org | |
| kernel/git/torvalds/linux.git - Linux kernel source tree | MISC | git.kernel.org | |
| CVE-2021-20322 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security | CONFIRM | security.netapp.com | |
| 2014230 – (CVE-2021-20322) CVE-2021-20322 kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies | MISC | bugzilla.redhat.com | |
| kernel/git/torvalds/linux.git - Linux kernel source tree | MISC | git.kernel.org | |
| kernel/git/torvalds/linux.git - Linux kernel source tree | MISC | git.kernel.org | |
| Debian -- Security Information -- DSA-5096-1 linux | DEBIAN | www.debian.org | |
| kernel/git/torvalds/linux.git - Linux kernel source tree | MISC | git.kernel.org | |
| Oracle Critical Patch Update Advisory - July 2022 | N/A | www.oracle.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 159741 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2022-9260)
- 159825 Oracle Enterprise Linux Security Update for kernel (ELSA-2022-1988)
- 178943 Debian Security Update for linux (DLA 2843-1)
- 179117 Debian Security Update for linux (DSA 5096-1)
- 179119 Debian Security Update for linux-4.19 (DLA 2941-1)
- 180522 Debian Security Update for linux (CVE-2021-20322)
- 198655 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5268-1)
- 240275 Red Hat Update for kernel-rt (RHSA-2022:1975)
- 240298 Red Hat Update for kernel security (RHSA-2022:1988)
- 240390 Red Hat Update for kernel-rt (RHSA-2022:4835)
- 240392 Red Hat Update for kernel security (RHSA-2022:4829)
- 353161 Amazon Linux Security Advisory for kernel : ALAS-2022-1563
- 354747 Amazon Linux Security Advisory for kernel : ALAS-2023-1688
- 390258 Oracle VM Server for x86 Security Update for kernel (OVMSA-2022-0011)
- 671181 EulerOS Security Update for kernel (EulerOS-SA-2021-2934)
- 671219 EulerOS Security Update for kernel (EulerOS-SA-2022-1030)
- 671225 EulerOS Security Update for kernel (EulerOS-SA-2022-1010)
- 671252 EulerOS Security Update for kernel (EulerOS-SA-2022-1171)
- 671288 EulerOS Security Update for kernel (EulerOS-SA-2022-1227)
- 671304 EulerOS Security Update for kernel (EulerOS-SA-2022-1208)
- 751399 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1501-1)
- 751406 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3806-1)
- 751424 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3848-1)
- 751436 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3877-1)
- 751437 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3876-1)
- 751441 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3876-1)
- 751451 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3935-1)
- 751462 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:3941-1)
- 751473 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3969-1)
- 751476 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3972-1)
- 751489 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 37 for SLE 12 SP3) (SUSE-SU-2021:4057-1)
- 900692 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8673)
- 906237 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8673-1)
- 940517 AlmaLinux Security Update for kernel (ALSA-2022:1988)